Answer:
QR codes, or Quick Response codes, are used for efficient data storage and quick retrieval of information. They were created by Denso Wave, a subsidiary of Toyota, in 1994 for tracking automotive parts during manufacturing. The primary purpose was to allow fast decoding of information.
QR codes gained popularity due to their ability to store more data than traditional barcodes and their quick readability. They are used in various applications, such as:
1. **Information Storage**: QR codes can store a variety of data types, including alphanumeric characters, binary, and special characters.
2. **Marketing**: Businesses use QR codes in advertising materials to provide quick access to websites, promotions, or contact information.
3. **Mobile Payments**: QR codes are often used in mobile payment systems, allowing users to make transactions by scanning a code.
4. **Ticketing**: They are employed for electronic ticketing in events, transportation, and other services.
5. **Product Packaging**: QR codes on products can provide consumers with detailed information, such as user manuals or product specifications.
Their versatility and ease of use contribute to the widespread adoption of QR codes across different industries.